One of the highlights from the December RAPP conference was seeing IRC’S aquaponics system. With little more than pvc pipes, fish tanks, rocks, plywood, and a water pump contained in an urban greenhouse, 12 hydroponic vegetable beds are watered while 1,400 small tilapia are simultaneously raised for harvesting. This type of innovative water system is not all that difficult to assemble yet creates a symbiotic growing system in which ammonia from the waste of the fish is converted to nitrates which the plants absorb.